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Related Concept Videos

Sutures of the Skull01:22

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The human skull is composed of several bones that come together to protect the brain and support the structures of the face. The junctions where these bones meet are called sutures.
Sutures are immobile joints between adjacent bones of the skull. The narrow gap between the bones is filled with dense, fibrous connective tissue that unites the bones. The long sutures located between the skull bones are not straight but instead follow irregular, tightly twisting paths. These twisting lines tightly...
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The cranium (skull) is the skeletal structure of the head that supports the face and protects the brain. It is subdivided into the facial bones and the brain case, or cranial vault. The facial bones underlie the facial structures, form the nasal cavity, enclose the eyeballs, and support the teeth of the upper and lower jaws.
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Cranial Bones: Superior and Posterior View01:14

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The superior view of the cranium shows the frontal and paired parietal bones.
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Plasticity is the property where an object loses its elasticity and undergoes irreversible deformation, even after the deformation forces are eliminated. If a material deforms irreversibly without increasing stress or load, then this is called ideal plasticity. For example, when a force is applied to an aluminum rod, it changes its shape, but it does not return to its original shape once the force is removed. Plastic deformation or ductility is thus a permanent deformation or change in the...
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Neuroplasticity01:01

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Neuroplasticity reflects the brain's remarkable capacity to adapt and evolve, responding dynamically to learning, experiences, or injury by reorganizing its neural circuitry. This reorganization involves creating new neural connections and refining old ones through a series of biological processes that contribute to the brain's lifelong development and adaptability.
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Cranial Bones: Lateral View01:27

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The lateral view of the cranium is dominated by temporal, sphenoid, and ethmoid bones.
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Related Experiment Video

Updated: Apr 15, 2026

Midface Hypoplasia and Cranial Base Morphology in Syndromic Craniosynostosis: A Comparative Analysis Study Using a Predictive Regression Model
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Craniofacial plasticity in ancient Peru.

Jessica H Stone1, Kristen Chew2, Ann H Ross2

  • 1Department of Anthropology, University of Oregon, Eugene, OR, USA.

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|March 26, 2015
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Summary
This summary is machine-generated.

Human cranial shape varies due to genetics and environment. This study in Peru reveals significant spatial patterning in facial measures, linking biological variation to geographic location and diverse ecological zones.

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Area of Science:

  • Anthropology
  • Human Evolution
  • Bioarchaeology

Background:

  • Craniometric data reveals human cranial shape variation influenced by genetics and environment.
  • Peru's diverse ecological zones and rugged terrain foster isolated populations with distinct adaptations.
  • Understanding regional craniofacial variation is key to human evolutionary studies.

Purpose of the Study:

  • To investigate the contributions of environmental adaptation and genetic relatedness to craniofacial variation in Peruvian populations.
  • To analyze regional patterns of human cranial shape variation across different ecological zones.
  • To explore the relationship between geographic location and biological variation in Peru.

Main Methods:

  • Utilized canonical discriminant analysis and Mahalanobis D(2) analysis to assess morphological variation.
  • Examined seven Peruvian population samples from diverse geographic and ecological settings.
  • Employed spatial autocorrelation analysis (Moran's I) with ArcMap to analyze geographic patterning.

Main Results:

  • All examined Peruvian groups showed significant craniofacial differences.
  • The closest genetic relationship was observed between Yauyos and Jahuay, despite differing ecozones.
  • Significant spatial patterning was found between facial measures and geographic location.

Conclusions:

  • Environmental adaptation and genetic factors significantly shape craniofacial variation in Peru.
  • Geographic location is associated with biological variation, indicating adaptation to diverse environments.
  • This study highlights the complex interplay of factors influencing human cranial diversity in the region.